METHOD FOR CONNECTING MOULDED PARTS

摘要

The invention relates to a method for connecting a moulded part (I) consisting of a thermoplastic polymer A containing colouring agents to a moulded part (II) consisting of a thermoplastic polymer B containing colouring agents by means of laser radiation. According to said method, 1) the laser radiation passes through moulded part (I) at the point to be connected and strikes moulded part (II), 2) moulded part (I) contains at least one colouring agent which absorbs selectively in the visible range of the electromagnetic spectrum, 3) the colouring agents contained in moulded part (I) and the concentrations thereof are chosen in such a way that moulded part (I) is permeable to laser radiation at the point to be connected, 4) the colouring agents contained in moulded part (II) and the concentrations thereof are chosen in such a way that moulded part (II) absorbs the laser radiation at the point to be connected and 5) the colouring agents contained in the two moulded parts (I) and (II) and the proportions thereof are chosen in such a way that moulded parts (I) and (II) are perceived by the human eye as having essentially the same colour.